"I find it very offensive," she told the paper. "It's offensive to him -- implying he's not good enough for you any more -- but also to you -- saying you're so shallow you'd dump him when you became successful. ... For people to think that you should leave someone because, all of a sudden, you're a singer and you have opportunities. I feel very sorry for them."

The singer who is known for her chart-topping debut album "Spirit" said her long-term boyfriend, an electrician, is her "best friend."

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"It does make me angry," Lewis told the paper. "Because he's a great person. And it doesn't matter what you do in life, what your job is, where you come from. None of that matters to me, what matters is who you are as a person -- nothing else."

Lewis, whose mom was a social worker and her father a DJ and youth offending officer, has stuck to her roots and still lives in the east London town where poverty runs rampant.